Thanks for posting this.
The article is
Wogram, Haiting Ma, Richard A. Young, and Rudolf Jaenisch. “SARS-CoV-2 RNA reverse-transcribed and integrated into the human genome.” bioRxiv (2020).
Blogger should have linked it, but this is better than nothing.
The concern here, to my mind, is leukemia or other blood cancer developing over long term.
-PJ